Perhaps you should try some spelling variations:
"dong yang cong snippets" » "dong yang code snippets", "dong bang cong snippets", "dong nang cong snippets", "dong quang cong snippets", "dong dang cong snippets", "dong hang cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung using java snippets") or ("dong yang cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung using java snippets") OR ("dong yang cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung using java snippets ) or ( dong yang cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung using java snippets") or ("dong yang cong snippets"))) or ("locating bug core snippets"))*.